XRoar

XRoar is a Dragon emulator for Linux, Unix, Mac OS X, GP32, Nintendo DS and Windows. Due to hardware similarities, XRoar also emulates the Tandy Colour Computer (CoCo) models 1 & 2. Firmware ROM images are required to usefully run this emulator.

If you have difficulty extracting these from your real Dragon or CoCo, dumps may be available from the Dragon Archive.